diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 95c29c6..39d0f4e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,8 @@ on:
 permissions:
   checks: write
   contents: write
+  # deployments permission to deploy GitHub pages website
+  deployments: write
   pull-requests: write
 
 
@@ -85,3 +87,19 @@ jobs:
                 echo "Coverage Tests - ${{ steps.coverageComment.outputs.tests }}"
                 echo "Coverage Time - ${{ steps.coverageComment.outputs.time }}"
                 echo "Not Success Test Info - ${{ steps.coverageComment.outputs.notSuccessTestInfo }}"
+
+            - name: Run benchmarks
+              run: |
+                pytest -m benchmark --benchmark-json=./output.json
+
+            - name: Publish benchmark results
+              uses: benchmark-action/github-action-benchmark@v1
+              with:
+                tool: 'pytest'
+                auto-push: false
+                output-file-path: output.json
+                github-token: ${{ secrets.GITHUB_TOKEN }}
+                comment-on-alert: true
+                save-data-file: false
+                skip-fetch-gh-pages: true
+                summary-always: true
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 1e37df5..19242af 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,7 @@
 -r requirements.txt  # Include all main requirements
 django>=4.2,<5.0
 pytest
+pytest-benchmark
+pytest-django
 ruff
 pre-commit
diff --git a/edtf/parser/grammar.py b/edtf/parser/grammar.py
index 1747341..9840bde 100644
--- a/edtf/parser/grammar.py
+++ b/edtf/parser/grammar.py
@@ -2,9 +2,10 @@
 
 # It's recommended to `enablePackrat()` immediately after importing pyparsing
 # https://github.com/pyparsing/pyparsing/wiki/Performance-Tips
-import pyparsing
 
-pyparsing.ParserElement.enablePackrat()
+# TODO: uncomment this once benchmark testing has run once in CI
+# import pyparsing
+# pyparsing.ParserElement.enablePackrat()
 
 from pyparsing import (
     Combine,